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WordReference Random House Learner's Dictionary of American English © 2024con•trol•ler /kənˈtroʊlɚ/USA pronunciation n. [countable]- Businessa government official or an officer of a business firm in charge of financial accounts and transactions;
comptroller:The state controller decided that contributions to the pension fund would stop. - a person who regulates or restrains.
- Mechanical Engineeringa regulating mechanism;
governor.
con•trol•ler•ship, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2024con•trol•ler (kən trō′lər),USA pronunciation n. - Businessan employee, often an officer, of a business firm who checks expenditures, finances, etc.;
comptroller. - a person who regulates, directs, or restrains.
- [Brit. Aeron.]a dispatcher.
- a regulating mechanism;
governor. - ComputingAlso called control unit, processor. the key component of a peripheral device, as a terminal, printer, or external storage unit, that contains the circuitry necessary to interpret and execute instructions fed into the device.
- Latin -ōr- -or2 or -ātōr- -ator
- Anglo-French countrero(u)llour, Middle French contrerolleur, equivalent. to contrerolle duplicate roll (see control) + -eur, -our
- Middle English countrollour 1350–1400
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